I don't think you'll see too many launchers as the style of the day was the rifle grenade that slipped over the flash hider and was launched with a blank cartridge.

And yes you could use those with a bolt action rifle. They were arguably more effective than a launcher since anyone in the section could employ one, and you could even have the whole squad fire a volley.

They weren't very accurate and if you didn't load a blank to fire there would be hurt feelings.